File list (Check if you may need any files):
javamail3
.........\.classpath
.........\.myeclipse
.........\.mymetadata
.........\.project
.........\.settings
.........\.........\org.eclipse.jdt.core.prefs
.........\src
.........\...\cn
.........\...\..\itcast
.........\...\..\......\javamail3
.........\...\..\......\.........\web
.........\...\..\......\.........\...\mail
.........\...\..\......\.........\...\....\servlets
.........\...\..\......\.........\...\....\........\SendMailServlet.java
.........\WebRoot
.........\.......\index.jsp
.........\.......\META-INF
.........\.......\........\context.xml
.........\.......\........\MANIFEST.MF
.........\.......\WEB-INF
.........\.......\.......\classes
.........\.......\.......\.......\cn
.........\.......\.......\.......\..\itcast
.........\.......\.......\.......\..\......\javamail3
.........\.......\.......\.......\..\......\.........\web
.........\.......\.......\.......\..\......\.........\...\mail
.........\.......\.......\.......\..\......\.........\...\....\servlets
.........\.......\.......\.......\..\......\.........\...\....\........\SendMailServlet.class
.........\.......\.......\lib
.........\.......\.......\...\demo2.jar
.........\.......\.......\web.xml